achtenvsachtzehnWhich spelling fits?

Quick tell: achten is a verb, achtzehn is a num, so they fill different roles in a sentence.

Which to use

“achten” is a verb and “achtzehn” is a num - they look or sound alike but fill different roles in a sentence.

#2,378
“achten” frequency rank
#25,429
“achtzehn” frequency rank
27807
confusion score

Side-by-Side Comparison

Feature achten achtzehn
Definition auf etwas Acht geben, etwas Beachtung schenken die Kardinalzahl zwischen siebzehn und neunzehn

Where the eye mixes achten and achtzehn

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. achten runs 6 letters (VCCCVC) against achtzehn's 8 (VCCCCVCC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
achten
8 ch
achtzehn

Why the eye confuses achten with achtzehn

These two trip readers on the page rather than in the ear: achten is [ˈaxtn̩] while achtzehn is [ˈaxt͡seːn]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs num), which is usually the fastest check. Our composite confusion score for this pair is 27807, derived from the frequency rank of both members and their visual similarity.

achten is recorded at frequency rank #2,378, classified as averb, pronounced [ˈaxtn̩]. achtzehn is at rank #25,429, tagged as anum, pronounced [ˈaxt͡seːn].

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 27807, this pair ranks #1,795,524 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of achten vs achtzehn

Shared letters: acehnt. Private to "achten": -. Private to "achtzehn": z.

"achten" · 6 letters · shape VCCCVC  ·  "achtzehn" · 8 letters · shape VCCCCVCC

Known mistypes of this pair

  • achten ← acchten · achetn · achhten · achtenn · achtne · achtten · acthen · ahcten
  • achtzehn ← acchtzehn · achhtzehn · achtezhn · achttzehn · achtzehhn · achtzehnn · achtzenh · achtzhen

Frequently Asked Questions

Can "achten" and "achtzehn" be used interchangeably?
No - they are not even the same part of speech. "achten" is a verb and "achtzehn" a num, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "achten" or "achtzehn" show up more?
"achten" is the more common of the two: it sits at frequency rank #2,378 in our German list, against #25,429 for "achtzehn". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "achten" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "achtzehn" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,795,524 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "achten" and "achtzehn" also get mixed up with nearby pairs, the highest-scored neighbour is "achten vs achtete". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #1,795,524 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list